have now hit qaddafi's air defenses, his air force, his army, and now his navy. and as control of the no-fly zone is tightened, allied commanders say they'll attack his forces even more. katie? >> couric: and mark you've been speaking with qaddafi loyalists in tripoli. how nervous are they? >> reporter: there is a growing sense of anxiety, even they will say so. we're now into the fourth night of these attacks. it's significant, i think, that he actually appeared on t.v. in person in vision, the first time since these attacks began perhaps to reassure his supporters. >> couric: mark phillips in tripoli tonight. mark, thank you. meanwhile, the wave of unrest continues throughout the middle east. in cairo today it was the police protesting. they want higher pay. as they demonstrated outside the interior ministry, a fire broke out on the upper floors and a security official accused them of starting it. in yemen's capital, protestors again demanded that the president step down.